What problem are you trying to solve?

Focus on the what and why of the need you have, not the how you'd like it solved.

To ensure only IP addresses that I have defined in code are applied I need to be able to control, or at least read, the complete list of network access list entries for a project.

What would you like to see happen?

Describe the desired outcome or enhancement.

Ideally, the mongodbatlas_project resource should accept a list of IP addresses / cidrs and it would remove any entries not in the list. This would have to be optional and would not be compatible with the existing resources. Alternatively it could return a computed list attribute with all entries, however, this would mean that at best Terraform could be used to list entries that it does not recognize in an output variable (with some creative coding).

Why is this important to you or your team?

Explain how the request adds value or solves a business need.

I need to ensure that someone has not added entries via the UI that Terraform is not managing.

What steps, if any, are you taking today to manage this problem?

Requires manual review of the list in the UI against that in Terraform, which is not tenable.